import java.awt.*;

/*public class lianxi {
    public static void main(String args[]){
        for(int i=20302;i<=20322;i++){
            System.out.println((char)i);
        }
    }
}*/
/*
public  class lianxi {
    public static void main(String args[]){
        int x=234,y=432;
        System.out.println(x+"<"+(2*x));
        System.out.print("我输出结果后不回车");
        System.out.println("我输出结果后自动回车到下一行");
        System.out.println("x+y="+(x+y));
    }

}*/
/*
//3题
public class lianxi {
    public static void main(String args[]){
        System.out.println("byte取值范围"+Byte.MIN_VALUE+"至"+Byte.MAX_VALUE);
        System.out.println("short取值范围"+Short.MIN_VALUE+"至"+Byte.MAX_VALUE);
        System.out.println("int取值范围"+Integer.MIN_VALUE+"至"+Integer.MAX_VALUE);
        System.out.println("long取值范围"+Long.MIN_VALUE+"至"+Long.MAX_VALUE);
        System.out.println("float取值范围"+Float.MIN_VALUE+"至"+Float.MAX_VALUE);
        System.out.println("double取值范围"+Double.MIN_VALUE+"至"+Double.MAX_VALUE);
    }
}*/
/*
//4题
public class lianxi {
    public static void main(String args[]){
        long[] a={1,2,3,4};
        long[] b={100,200,300,400,500};
        b=a;
        System.out.println("数组b的长度为"+b[0]);
    }
}*/
//5题
public class lianxi {
    public static void main(String args[]){
        int []a={10,20,30,40},b[]={{1,2},{4,5,6,7}};
        b[0]=a;
        b[0][1]=b[1][3];
        System.out.println(b[0][3]);
        System.out.println(a[1]);
    }
}
